CN111821539B - Infusion port for hemodialysis - Google Patents
Infusion port for hemodialysis Download PDFInfo
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- CN111821539B CN111821539B CN202010694504.3A CN202010694504A CN111821539B CN 111821539 B CN111821539 B CN 111821539B CN 202010694504 A CN202010694504 A CN 202010694504A CN 111821539 B CN111821539 B CN 111821539B
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- supporting part
- liquid storage
- infusion port
- seat unit
- thread section
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/158—Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/158—Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body
- A61M2005/1587—Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body suitable for being connected to an infusion line after insertion into a patient
Abstract
The invention relates to medical auxiliary equipment, in particular to an infusion port for hemodialysis, which comprises two infusion port seat units arranged side by side, wherein a liquid storage tank is arranged in each infusion port seat unit, a puncture membrane covering the opening of the liquid storage tank is hermetically connected to each infusion port seat unit, a catheter communicated with the liquid storage tank is connected to each infusion port seat unit, each infusion port seat unit comprises a supporting part and an adjusting part, the adjusting part is in threaded connection with the supporting part, and the puncture membrane is connected with the adjusting part. The problem that the operation incision is great and be unfavorable for the incision to heal up fast when infusion port implants among the prior art has been solved to this scheme, and simultaneously, the mode that sets up of two infusion port seat units and pipe makes hemodialysis can operate on an infusion port.
Description
Technical Field
The invention relates to medical auxiliary equipment, in particular to a transfusion port for hemodialysis.
Background
Hemodialysis is a process in which blood in a body is drained to the outside of the body, and the blood is returned to the body after metabolic wastes in the blood are removed by a dialysis machine outside the body. Hemodialysis is generally primarily an alternative treatment for patients with renal failure. Since the human body generates metabolic waste at any time and hemodialysis patients need to remove the metabolic waste by means of hemodialysis, hemodialysis patients need to perform hemodialysis treatment for a long time and many times. The blood drainage to the outside of the body and the blood return during hemodialysis are realized by directly communicating with blood vessels. If the blood vessel is directly punctured to be communicated with the blood vessel during each hemodialysis, the frequent puncturing of the blood vessel easily causes the lesion of the blood vessel and increases the pain of a patient due to more times of hemodialysis. To reduce the number of punctures to the vessel, it is possible to use the implantation of an infusion port in communication with the vessel in vivo.
The existing transfusion port comprises a transfusion port seat unit, a puncture membrane and a catheter, wherein a liquid storage tank is arranged on the transfusion port seat unit, the puncture membrane covers the opening of the liquid storage tank, one end of the catheter is communicated with the liquid storage tank, the other end of the catheter is provided with an opening with a three-way valve and is communicated with a blood vessel, and therefore the liquid storage tank of the transfusion port seat unit can be communicated with the blood vessel through the catheter. During hemodialysis, the non-invasive needle penetrates through the puncture membrane and is communicated with the liquid storage tank to realize the communication with the blood vessel, so that the times of puncturing the blood vessel are reduced, and the risk of causing vascular lesion is reduced. The use of the transfusion port needs to be implanted into a human body through an operation, and the transfusion port seat unit of the prior transfusion port has larger volume, so that a larger incision needs to be cut during implantation, a larger wound surface is formed, the time of the implantation operation is prolonged, and the quick recovery of a patient is not facilitated.
Disclosure of Invention
The invention aims to provide a hemodialysis port with a small operation incision during implantation.
In order to solve the problems, the basic scheme of the invention is as follows: the utility model provides an infusion port for hemodialysis, includes two infusion port seat units that set up side by side, the inside of infusion port seat unit is equipped with the reservoir, and sealing connection has the puncture diaphragm that covers at the reservoir opening part on the infusion port seat unit, every all be connected with the pipe with the reservoir intercommunication on the infusion port seat unit, infusion port seat unit includes supporting part and regulating part, regulating part and supporting part threaded connection, the puncture diaphragm is connected with regulating part.
Compared with the prior art, the invention has the advantages that: before the infusion port seat unit is not implanted into a human body, the adjusting part and the supporting part are matched with each other compactly under the action of the threads, so that the volume of the liquid storage tank is compressed as much as possible, the volume of the whole infusion port seat unit is smaller, and therefore, when the infusion port seat unit is implanted into the human body for surgery, the requirement for placing the infusion port seat unit can be met by a smaller incision of the surgery, the pain of a patient can be relieved, the surgery time is saved, and the surgery recovery time is shortened.
Furthermore, an external thread section is arranged on the supporting part along the circumferential direction of the liquid storage tank, and an internal thread section in threaded fit with the external thread section is arranged on the adjusting part; the screw pitch of external screw thread section is greater than the width of screw thread bottom, and the screw thread of external screw thread section is provided with a plurality of breachs towards one side of adjustment portion, and the screw thread of internal thread section is provided with a plurality of archs with the unsmooth complex of breach towards one side of supporting part.
The thread pitch is larger than the width of the thread teeth, so that the external thread section and the internal thread section can slide relatively for a small distance along the axis direction under the condition of no relative rotation, thereby realizing the connection or separation between the control notch and the protrusion; when the protrusion and the notch are in a separated state, the external thread section and the internal thread section can rotate relatively, so that the aim of adjusting the volume of the whole transfusion port seat unit is fulfilled.
In particular, when in use, the transfusion port seat unit is positioned between the skin and the muscle of the human body, the supporting part of the transfusion port seat unit is positioned at a position close to one side of the muscle, the regulating part is positioned at a position close to one side of the skin, so that the elastic force generated by the skin extrudes the adjusting part to one side of the supporting part, thereby realizing the connection and the matching of the gap and the bulge between the internal thread section and the external thread section, thereby enhancing the locking function between the internal thread section and the external thread section, avoiding the situation that the volume of the transfusion port seat unit is randomly changed due to the relative rotation between the adjusting part and the supporting part, namely, the depth of the liquid storage tank in the transfusion port seat unit is in a fixed value state, the difference between the depth of the liquid storage tank and the recorded depth caused by the volume change of the transfusion port is avoided, further avoiding the use problem caused by the mismatch between the specification of the atraumatic needle and the depth of the liquid storage groove.
Furthermore, an extension section extending towards the liquid storage tank is fixedly arranged on the puncture diaphragm, and the extension section is in sealing sliding fit with the supporting part. The setting of extension section can make whole puncture diaphragm satisfy the condition messenger of puncture requirement at thickness, and the extension section stretches into in the reservoir and the puncture diaphragm is placed in the space of abundant utilization reservoir to reduce the shared space of puncture diaphragm and reservoir, be favorable to further reducing the volume of infusion port seat unit before the human body of implantation, and then make things convenient for the implantation operation of infusion port seat unit.
Further, the extension section is round platform form to the great end of diameter of extension section sets up towards the supporting part. By adopting the arrangement mode, the acting force generated by the support part on the extension section has the function of pushing the puncture diaphragm towards the direction of the support part, so that the puncture diaphragm drives the adjusting part to extrude towards the support part, the thread section between the auxiliary adjusting part and the support part strengthens the locking function under the action of the notch and the protrusion, and the relative stability of the position between the adjusting part and the support part is improved.
Further, the one end that the supporting part was kept away from to regulating part has set firmly two magnet pieces, and two magnet pieces set up along the tip symmetry of regulating part to the magnetic pole of the one end of two magnet pieces back to the supporting part is heteropolarity and sets up. Set up two magnet pieces, just can realize the pulling and the twisting action to the regulating part through using corresponding magnet mechanism in human outside, conveniently adjust the relative position between regulating part and the supporting part under the condition of not damaged, improved the convenience that the port of infusing used.
Further, be provided with a plurality of separation blades along the circumference of reservoir inner wall on the supporting part, the separation blade is towards the one end and the supporting part elastic connection of reservoir bottom, and the separation blade is back to one side and the puncture diaphragm sliding fit of supporting part, is provided with the stock solution bag between separation blade and the supporting part, and the supporting part is kept away from the one end of adjustment portion and is followed the axis direction sliding connection of perpendicular to external screw thread section and be connected with a plurality of supporting shoes, is connected with the drive bag that can promote the supporting shoe and remove on the supporting part, drive bag and stock solution bag intercommunication.
The setting of separation blade makes the extension section of puncture diaphragm when with supporting part relative movement, and the extension section of puncture diaphragm can promote the separation blade swing to make the separation blade extrusion stock solution bag, make the liquid in the stock solution bag flow in the drive bag. The driving bag expands along with the increase of liquid, so that the driving bag pushes the supporting block to slide, the contact area of the supporting part and a human body is increased, the pressure effect is reduced, and the improvement of the comfort of the transfusion port during use is facilitated.
Further, the outside slip cover of regulating part is equipped with the sleeve pipe, sheathed tube one end and supporting part sealing fixed connection, are provided with one-way seal membrane between sleeve pipe and the regulating part. The one-way sealing film has the function of enabling air outside the sleeve to smoothly enter a gap between the sleeve and the adjusting part and preventing the air at the gap from entering the outer side of the sleeve. Through the arrangement of the sleeve, the sleeve shields the external thread section on the supporting part, and the problem that the external thread section is not easy to operate when the transfusion port is taken out due to the fact that the external thread section is adhered to the skin of a human body due to the fact that the contact surface of the external thread section with the skin of the human body is too large is solved. Meanwhile, the sleeve is in sealing fit with the adjusting part, so that a sealing barrier between the adjusting part and the supporting part is enhanced, and the situation that blood in the liquid storage tank permeates to the outer side of the transfusion port seat unit is reduced.
Further, one-way seal membrane and regulation portion fixed connection, one-way seal membrane are hollow round platform form, the less end of diameter of one-way seal membrane towards the direction of keeping away from the stock solution tank bottom set up and with regulation portion fixed connection, the great end of diameter and the sleeve pipe sliding fit of one-way seal membrane. Adopt such mode of setting up, when making the direction of regulating part orientation keeping away from the supporting part remove, one-way seal membrane is in tensile state under the effect of frictional force to make one-way seal membrane can reduce the effect of frictional force through deformation, and then be favorable to improving the life of one-way seal membrane.
Drawings
FIG. 1 is a schematic structural diagram according to a first embodiment of the present invention;
FIG. 2 is a full sectional view of one of the port block units of FIG. 1;
FIG. 3 is an enlarged view taken at A in FIG. 2;
FIG. 4 is a view showing a state of use of the port block unit of FIG. 2;
FIG. 5 is a schematic view of a port seat unit according to a second embodiment of the present invention;
FIG. 6 is a schematic structural diagram of a third embodiment of the present invention;
FIG. 7 is a top view of one of the infusion port seat units of FIG. 6 in use;
FIG. 8 is a cross-sectional view of the initial state B-B of FIG. 7;
FIG. 9 is a schematic structural diagram of a fourth embodiment of the present invention;
FIG. 10 is a full cross-sectional view of one of the access port units of FIG. 9;
fig. 11 is an enlarged view at C in fig. 10.
Detailed Description
The following is further detailed by way of specific embodiments:
reference numerals in the drawings of the specification include: the device comprises an adjusting part 1, an internal thread section 11, a protrusion 111, a supporting part 2, an external thread section 21, a notch 211, a puncture diaphragm 3, a connecting section 31, an extending section 32, a liquid storage tank 4, a conduit 5, a liquid inlet 51, a liquid outlet 52, a connector 53, a magnet block 6, a baffle 7, a limiting block 71, a liquid storage bag 8, a driving bag 9, a supporting block 10, a sleeve 12 and a one-way sealing film 13.
The first embodiment is as follows: substantially as shown in figures 1, 2, 3 and 4 of the accompanying drawings: a transfusion port for hemodialysis comprises two transfusion port seat units with the same structure, wherein the two transfusion port seat units are arranged side by side and comprise a supporting part 2 and an adjusting part 1; the supporting parts 2 are cylindrical, and the supporting parts of the two transfusion port seat units are arranged side by side and form a whole; a liquid storage tank 4 is axially arranged on the supporting part 2, and the bottom of the side surface of the supporting part 2 is connected with a conduit 5 communicated with the liquid storage tank 4; the supporting part 2 is provided with an external thread section 21 along the circumferential direction of the liquid storage tank 4, the thread pitch of the external thread section 21 is larger than the width of the bottom of the thread, and the thread pitch is twice of the width of the bottom of the thread in the embodiment; a plurality of notches 211 are formed in one side, back to the bottom of the liquid storage tank 4, of the thread teeth of the external thread section 21; the adjusting part 1 and the supporting part 2 are coaxially arranged, the adjusting part 1 is cylindrical, an internal thread section 11 in threaded fit with an external thread section 21 of the supporting part 2 is arranged on the adjusting part 1, a plurality of protrusions 111 in concave-convex fit with the notch 211 are arranged on one side, facing the bottom of the liquid storage tank 4, of thread teeth of the internal thread section 11, and due to the fact that thread pitches are larger than the width of the bottom of the thread teeth, the adjusting part 1 and the supporting part 2 can relatively slide along the axial direction under the condition that relative rotation does not occur, and therefore connection or separation between the notch 211 and the protrusions 111 is achieved. The inside bonding of regulating part 1 has puncture diaphragm 3, and puncture diaphragm 3 divide into linkage segment 31 and the extension section 32 of round platform form along the axial of regulating part 1, and linkage segment 31 and extension section 32 integrated into one piece, linkage segment 31 and regulating part 1 bonding are fixed, and the great end of the diameter of extension section 32 extends the inside of reservoir 4 and seals sliding fit with supporting part 2.
The bottom of the side of the supporting part 2 of the two transfusion port seat units is fixedly connected with a connector 53 communicated with respective liquid storage tank 4, the two connectors 53 are arranged side by side, and one end of each connector 53 extends to the outer side of the supporting part 2, so that the connectors are conveniently connected with the guide pipe 5. Two independent channels are arranged inside the guide pipe 5, and when the guide pipe 5 is connected with the two connectors 53, one channel is correspondingly communicated with one connector 53; a liquid inlet 51 and a liquid outlet 52 are arranged at one end of the conduit 5 far away from the connector 53, the liquid inlet 51 and the liquid outlet 52 are spaced by four centimeters, the liquid inlet 51 is communicated with one of the channels, the liquid outlet 52 is communicated with the other channel, and three-way flap valves are arranged at the liquid inlet 51 and the liquid outlet 52; the three-way valve is characterized in that the valve is opened inwards to draw blood when the pressure is negative; when the pressure is positive, the valve is opened outwards, and infusion or blood transfusion can be carried out; during balancing, the valve is closed, so that the risk of air embolism, blood backflow or coagulation is avoided, and the workload of tube sealing operation is reduced. When in use, the catheter 5 is simultaneously connected and fixed with the two connectors 53, so that the two channels in the catheter 5 are communicated with the two transfusion port seat units in a one-to-one correspondence manner, one end of the catheter 5 penetrates into a vein, the liquid outlet 52 is positioned on the proximal side of the vein, and the liquid inlet 51 is positioned on the distal side of the vein.
The specific implementation process is as follows: before the infusion port seat unit is implanted into a human body, the adjusting part 1 and the supporting part 2 are matched with each other compactly under the action of the screw threads, namely, the matching length of the external thread section 21 and the internal thread section 11 is longer, so that the volume of the whole infusion port seat unit is smaller, and meanwhile, the extension section 32 of the puncture membrane 3 is also in a state of extending into the liquid storage tank 4, therefore, the volume of the whole infusion port seat unit is smaller than that of the infusion port seat unit in the prior art, so that the purpose of placing the infusion port seat unit can be realized by making an operation incision smaller when an implantation operation is carried out. After the transfusion harbor seat unit is implanted into a human body, the supporting part 2 is fixed, then the adjusting part 1 is pulled axially to separate the bulge 111 between the adjusting part 1 and the supporting part 2 from the gap 211, and then the adjusting part 1 is rotated to enable the adjusting part 1 and the supporting part 2 to rotate relatively, so that the adjusting part 1 and the supporting part 2 are mutually separated under the action of the external thread section 21 and the internal thread section 11; meanwhile, the adjusting part 1 also drives the extension section 32 of the puncture membrane 3 to gradually exit the liquid storage tank 4, so that the actual storage space of the liquid storage tank 4 is gradually increased; finally, the rotation of the adjusting part 1 is stopped according to the use requirement, and the adjusting part 1 is pressed in the axial direction to move towards the supporting part 2, so that the notch 211 on the external thread section 21 is matched and connected with the protrusion 111 on the internal thread section 11, and the external thread section 21 and the internal thread section 11 realize the mutual locking effect. With the healing of the operation incision, the skin applies a pressure to the adjusting part 1 towards the supporting part 2, so that the external thread section 21 and the internal thread section 11 realize a continuous locking effect, thereby avoiding the situation that the adjusting part 1 rotates randomly in the human body to cause the volume of the liquid storage tank 4 to change.
One end of the catheter 5 is inserted into a vein of a human body in a direction in which blood flows back into the heart, so that the inlet 51 is located on the distal side of the vein and the outlet 52 is located on the proximal side of the vein, so that when hemodialysis is performed, blood of the human body is drawn from the port block unit communicating with the inlet 51 to a dialyzer for treatment, and the treated blood is injected into the human body from the port block unit communicating with the outlet 52, thereby performing hemodialysis operation of the blood.
Example two: the difference from the first embodiment is only that: as shown in fig. 5, two magnet blocks 6 are fixedly embedded at one end of the adjusting portion 1 far from the supporting portion 2, the two magnet blocks 6 are symmetrically arranged along the end portion of the adjusting portion 1, and the polarity of the magnetic pole of one end of the two magnet blocks 6 back to the supporting portion 2 is opposite. Set up two magnet pieces 6, just can realize the pulling and the twisting action to regulating part 1 through using corresponding magnet mechanism in human outside, conveniently adjust the relative position between regulating part 1 and supporting part 2 under the condition of not damaged, improved the convenience that the port used of infusing. Particularly, the body weight of some dialysis patients is greatly changed in a short time due to the reduction of the body function, so that the skin of the dialysis patients becomes loose, the original volume of the transfusion port seat unit is easy to move in the body, the stability of the connection part between the transfusion port seat unit and the catheter 5 is not facilitated, the volume of the transfusion port seat unit is increased by rotating the adjusting part 1 by using a magnet on the outer side of the skin, the redundant space of the placement part of the transfusion port seat unit caused by the loose skin is filled, the transfusion port seat unit is continuously stressed by the pressure of the skin and is not easy to move, and the use reliability of the transfusion port seat unit is improved.
Example three: the difference from the second embodiment is only that: as shown in fig. 6, 7 and 8, a plurality of baffle plates 7 are arranged on the supporting portion 2 along the circumferential direction of the inner wall of the liquid storage tank 4, all the baffle plates 7 are distributed in an annular array along the axial direction of the supporting portion 2, the lower ends of the baffle plates 7 are elastically connected with the supporting portion 2, and one side of the baffle plates 7, which is back to the supporting portion 2, is in sliding fit with the puncture membrane 3; a transverse limiting block 71 is integrally formed at one side of the upper end of the baffle 7, which is back to the axis of the supporting part 2, a liquid storage bag 8 is arranged between the baffle 7 and the supporting part 2, and the limiting block 71 can limit the upward deformation of the liquid storage bag 8 to be separated from a gap between the baffle 7 and the supporting part 2; the upper ends of all the baffle plates 7 are close to the axis of the support part 2 under the action of elasticity, so that all the baffle plates 7 form an approximate hollow round table structure; one end of the supporting part 2, which is far away from the adjusting part 1, is connected with a plurality of supporting blocks 10 in a sliding way along the direction vertical to the axis of the external thread section 21, in the embodiment, the number of the supporting blocks 10 arranged on the supporting part 2 of each transfusion harbor seat unit is two, and the two supporting blocks 10 are symmetrically arranged; the bottom of the supporting part 2 is provided with sliding chutes along the radial direction, and each supporting block 10 is positioned in the corresponding sliding chute and is in sliding fit with the supporting part 2; a driving bag 9 is fixedly bonded in the middle of the bottom of the supporting part 2, the driving bag 9 is made of elastic material, and one end of the supporting block 10, which faces the middle of the supporting part 2, is abutted against the driving bag 9, so that the supporting block 10 can be pushed to slide through the volume expansion of the driving bag 9; the driving bag 9 is communicated with the liquid storage bag 8, and specifically, a channel for communicating the liquid storage bag 8 with the driving bag 9 is arranged on the supporting part 2.
When the adjusting part 1 and the supporting part 2 move relative to each other, the adjusting part 1 drives the extension section of the puncture membrane 3 to move relative to the supporting part 2, and the extension section of the puncture membrane 3 pushes the separation blade 7 to swing in the direction away from the axis of the supporting part 2, so that the separation blade 7 extrudes the liquid storage bag 8, and the liquid in the liquid storage bag 8 flows into the driving bag 9. The driving bag 9 expands along with the increase of the liquid, so that the driving bag 9 pushes partial structure of the supporting block 10 to slide to the outer side of the supporting part 2, thereby increasing the contact area of the supporting part 2 and the human body, reducing the pressure effect and being beneficial to improving the comfort of the transfusion port in use.
Example four: the difference from the third embodiment is only that: as shown in fig. 9, 10 and 11, a sleeve 12 is slidably sleeved outside the adjusting part 1, the lower end of the sleeve 12 is fixedly connected with the supporting part 2 in a sealing manner, and a one-way sealing film 13 is arranged between the sleeve 12 and the adjusting part 1; one-way seal membrane 13 and regulation portion 1 fixed connection, one-way seal membrane 13 are hollow round platform form, and the less end of the diameter of one-way seal membrane 13 sets up and with regulation portion 1 fixed connection towards the direction of keeping away from the reservoir 4 bottom, the great end of the diameter of one-way seal membrane 13 and sleeve pipe 12 sliding fit. The one-way sealing film 13 functions to allow air outside the sleeve 12 to smoothly enter a gap between the sleeve 12 and the adjustment part 1, and to prevent air in the gap from entering the outside of the sleeve 12. The sleeve 12 is arranged to shield the external thread section 21 on the supporting part 2, so that the problem that the external thread section 21 is difficult to operate when being taken out of the transfusion port due to adhesion caused by overlarge contact surface with the skin of a human body is solved. Meanwhile, the sealing fit between the sleeve 12 and the adjusting part 1 strengthens the sealing barrier between the adjusting part 1 and the supporting part 2, and reduces the occurrence of the situation that the blood in the liquid storage tank 4 permeates to the outside of the transfusion port seat unit.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The foregoing is merely an example of the present invention, and common general knowledge in the field of known specific structures and characteristics is not described herein in any greater extent than that known in the art at the filing date or prior to the priority date of the application, so that those skilled in the art can now appreciate that all of the above-described techniques in this field and have the ability to apply routine experimentation before this date can be combined with one or more of the present teachings to complete and implement the present invention, and that certain typical known structures or known methods do not pose any impediments to the implementation of the present invention by those skilled in the art. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (7)
1. The utility model provides an infusion port for hemodialysis, includes two infusion port seat units that set up side by side, the inside of infusion port seat unit is equipped with the reservoir, and sealing connection has the puncture diaphragm that covers at the reservoir opening part on the infusion port seat unit, every all be connected with the pipe with the reservoir intercommunication on the infusion port seat unit, its characterized in that: the transfusion port seat unit comprises a supporting part and an adjusting part, the adjusting part is in threaded connection with the supporting part, and the puncture membrane is connected with the adjusting part;
an external thread section is arranged on the supporting part along the circumferential direction of the liquid storage tank, and an internal thread section in threaded fit with the external thread section is arranged on the adjusting part; the screw pitch of external screw thread section is greater than the width of screw thread bottom, and the screw thread of external screw thread section is provided with a plurality of breachs towards one side of adjustment portion, and the screw thread of internal thread section is provided with a plurality of archs with the unsmooth complex of breach towards one side of supporting part.
2. A port according to claim 1, wherein: an extension section extending towards the liquid storage tank is fixedly arranged on the puncture diaphragm, and the extension section is in sealing sliding fit with the supporting part.
3. A port according to claim 2, wherein: the extension section is round platform form to the great end of the diameter of extension section sets up towards the supporting part.
4. A port according to claim 3, wherein: the one end that supporting part was kept away from to regulating part has set firmly two magnet pieces, and two magnet pieces set up along the tip symmetry of regulating part to the magnetic pole of the one end of two magnet pieces back to the supporting part is heteropolarity and sets up.
5. A port according to claim 4, wherein: the supporting part is provided with a plurality of separation blades along the circumference of the inner wall of the liquid storage tank, one end of each separation blade, facing the bottom of the liquid storage tank, is elastically connected with the supporting part, one side of each separation blade, back to the supporting part, is in sliding fit with the puncture diaphragm, a liquid storage bag is arranged between each separation blade and the supporting part, one end, far away from the adjusting part, of the supporting part is slidably connected with a plurality of supporting blocks along the axis direction of the outer thread section of the vertical plane, a driving bag capable of pushing the supporting blocks to move is connected onto the supporting part, and the driving bag is communicated with the liquid storage bag.
6. A port according to claim 5, wherein: the outside slip cover of regulating part is equipped with the sleeve pipe, sheathed tube one end and supporting part sealing fixed connection, is provided with one-way seal membrane between sleeve pipe and the regulating part.
7. The port of claim 6, wherein: one-way seal membrane and regulation portion fixed connection, one-way seal membrane are hollow round platform form, the less end of diameter of one-way seal membrane towards the direction of keeping away from the stock solution tank bottom set up and with regulation portion fixed connection, the great end of diameter and the sleeve pipe sliding fit of one-way seal membrane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010694504.3A CN111821539B (en) | 2020-07-17 | 2020-07-17 | Infusion port for hemodialysis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010694504.3A CN111821539B (en) | 2020-07-17 | 2020-07-17 | Infusion port for hemodialysis |
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| Publication Number | Publication Date |
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| CN111821539A CN111821539A (en) | 2020-10-27 |
| CN111821539B true CN111821539B (en) | 2022-03-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010694504.3A Active CN111821539B (en) | 2020-07-17 | 2020-07-17 | Infusion port for hemodialysis |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116212156B (en) * | 2023-03-15 | 2023-12-08 | 江苏义倍医疗科技股份有限公司 | Implanted transfusion port |
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| CN101309720A (en) * | 2005-11-16 | 2008-11-19 | 欧洲腹腔镜检植入装置研制公司 | Implantable atraumatic medical site having a simplified design |
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| DE3723847A1 (en) * | 1986-07-24 | 1988-01-28 | Zahnradfabrik Friedrichshafen | Threaded insert with rotation-prevention means |
| JPH11229557A (en) * | 1998-02-18 | 1999-08-24 | Tokyo Tekko Co Ltd | Connecting device for threaded bar |
| US6022335A (en) * | 1998-07-01 | 2000-02-08 | Ramadan; Hossein | Implantable hemodialysis triple port assembly |
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| JP5606855B2 (en) * | 2010-09-29 | 2014-10-15 | 日本コヴィディエン株式会社 | Subcutaneous implantation port and manufacturing method thereof |
| US10166321B2 (en) * | 2014-01-09 | 2019-01-01 | Angiodynamics, Inc. | High-flow port and infusion needle systems |
| CN208756692U (en) * | 2018-02-24 | 2019-04-19 | 无锡市人民医院 | Transfusion port |
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